Automatic box-body and cover assembling apparatus



March s. 1921.

J. M. HOTHERSALL AUTOIMTIELBOX BODYAND COVER'QSSEMBLING APPATUS Filedaan'. 192s QW M s l S NYI, l www mi Ulli n. n W H @E mw@ S, QN\ k ma 1flutll MAI kN mtl 31..- NWH l V NTOR. l

ATTO/wzJ/S Mmh s, 1927.

J. M. HOTHERSALL AIUTOMATIC BOX BODY AND COVER ASSEMBLING APPARATUS medJa. 1923 v 8 sheetssht a March s, 1927.

J. M. Ho'HERsALL,

AUTOMATIC BOX BODY AND COVER ASSEMBLING APPARATUS Filed` Jan. 6. 1923 1Q March 8 927 .1.M. HoTHERsALL AUTOMATIC BOX BODY AND COVER SSEMBLINGAPARATUS Filed Jan. 6. 1923 1,620,025 March 8 1927' J. M. HoTHERsALL.

`AUTOMATIC BOX BODY AND COVER ASSEMBLING APPARATUS Filed Jan. 6. 1925 v8SheStSlShee't 6 150 1118 759 161 172 /642 ,I lh 0., 166 ,6 /v O O IG i 7f f I6 163 55 f m a @Lv D A /76 'jg U /7X I l n :"1 if /1 Il /65 ZQ" J0m' IZVENTR.

"l1/ll M @7&1

` ATTORNEYS March 8, 1927.

J. m.4 Ho'rHERsALL AUTOMATIC Box BODY AND cpvsn AssEMBLING APPARATUS meaame. 1923. s sneetlshei v mmv INVENTOR. /77- M mvgz" A v A TT ORNE YSMardi 8 1927' J. M. HoTHERsALL AUTOMATIC BOX BODY AND COVER ASSEMBLINGAPPARATUS Filed Jan. e. 1925 8 sh't'ssnt Patented Mar. 8, 1927.

Unirse sfra'ies JOHN M. HOTHERSALL, OF BROOKLYN, NEW YORK, lASSIGNOR T0Param AMERICAN CAN COMPANY, 0E NEW Yemen. Y., A ccnroasrron or NEWJERSEY.

AUTOMATIC BOXi-BODY AND COVER ASSEIVIBLING APPARATUS.

iippiicaiimiY inca January e, 1923. semi No; 610,960.

My invention relates generally to apparatus for automatically assemblingsheet vmet-al box bodies and covers, the particular adaptation hereinshown and described being for the purpose of assembling boxes of thetype commonly used. for the packaging of aspirin. a

A principal object of the invention is the provision of an assemblingapparatus of `the character stated, which operates with a full automaticaction to advance the box bodies and covers and perform successiveasse1nbling operations thereon at a high rate of speed and efficiencyand without-necessitating particular attention of theattendant.

A further'object ofthe invention is the provision, in apparatus of thischaracter, of devices for automatically preventing congestion of eitherbox bodies or covers in the passageways through which they are fed toand past the assembling mechanism.

VA still further object of my invention is the provision of mechanismfor preventing the feeding, either of bodies or covers, to the assemblystation inthe absence of a companion part for assembly therewith.

Other objects and advantages of the invention will be apparent as it isVbetter understood from the following description, which, taken inconnection with the accom panying drawing, illustrates a preferredembodiinent thereof.

Referring to the drawings, f Figure 1 is a plan view of a machine inwhich my invention is embodied;

Fig. 2 is a detail perspective of the main drive shaft, showing thedriving pulleys and operating cams mounted thereon; i

Fig. 3 is an enlarged section taken substantially on the line Sw of Fig.1;

Fig. 4 is a similar section taken substantially on the line 4l-fl ofFig. 1;

Fig. 5 is an enlarged transverse section taken substantially on the line5 5 in Fig. 1;

Fig. 6 is a similar section line 6&6 of Fig. 1; y

Fig. 7 is a detail view, taken substantially on the line -T of Fig. 6and showing the mechanism for operating the hinge lug bendingvarin;

Fig. 8 is a sectional detail, llooking upwardly, taken substantially onthe line 8-S of Fig.` l2 and showing the no-body-nol-end taken on thedevice; Y

Fig. 9 is an enlarged transverse Vsection .taken substantially on the.line 99` of Fig. 1;

F 10 is a similar view taken substair tially on the line 10-.-10 of Fig.1;

Fig. A-11 is an enlarged perspective View of the mechanism for clinchingtogether the hingeV forming lugsof-the body and cover;

Fig. 12 is'an enlarged transverse section taken substantially onthe linelf2-w12 of Fig. 1; f y

liig. 13 is a perspective view of the body andcover of an aspirin boxadapted t0 be .assembled by an apparatus embodying my invention;

Fig. le is a similar view showing the cover Fig. 16 is a cross sectionalvviewthrongh` the body and cover prior tothe assembly thereof; r i i'Fig. 17 is a similar view showing the cover in its position after theiirst step of the assembling operation; f. y `F 18 is a like viewshowing thecover and bodyin their relationship 'after being partiallyassembled and the body .brought to horizontal position; and Y Fig. 19 isa view'of the same parts, showing the finally formed hinge.

Fig. 2O is adetailed section taken substantially-aiong thea'xis of thebody feedcontrol shaft showing the construction thereof.

Attention is rst called to Figs. 13 to 19,

inclusive, illustrating a box adaptedV to be assembled by the apparatusof my invention,

the sectional views showing the positions and relationship at thevarious stations in the machine. Y

The box body 21v may, of course,v be of any desired shape, 0r size, andin the present instance is formed with recesses 22 and a hinge forn'iinglug 23'inthe rear wall thereof. The recesses 22 are formed by outwardlyextendperspective view of anfasico ingebead sections and the lug` 23 isbeaded. Y

inwardly so that when brought to final position, a hinge bearing isprovided.V The box cover '24 has a coi-operating hinge forming lug inthe rear flange thereof, said Vflange being' cut away so that the endsof said lug project beyond the body thereof, these ends ,being adaptedto be disposed in the recesses 22 when the parts Aare assembled. Thevarif ous operations ofthe machine will be under-y sitioned, if desired,in convenient relation-V ship to a press, or other machine performing apreceding operation upon the metal. he box bodies and covers are fed, inany suitable manner as by a conveyer, from such preceding machine intoguideways28. and 29 (Figs.

3, 4 and 5), the former'of these being vertically arranged and adaptedto. have the bodies fed in upright position therethrough-and `the latterbeing horizontally arranged, so

da, connecting rod (Fig.

in .closed position.

that the covers may remain in horizontal positionv throughout theircourse of travel. These passageways are :in adjacent relation ship,being arranged respectively alongV the Vapproximate lines 3-3 and 1*4,as shown in Fig. 1. As av means of directing the bodies and coifersalong their passageways, I vemploy compressed air, which is deliveredfrom a supply pipe 31 through branches 32 to` a chamber 33, from whichopenings. 34 lead into said'passageways.'

. A safety defyice isprovided for preventing the overcrowding of eitherthe bodies or covers inthe channelsfthrough which they are fed, thismechanism beingV illustrated in de-V tail in Figs. 3 and 4. Referringfirst to Fig. 3, it will be noted that a trap door 35 is provided .atthe bottom of the channel 28, this door being hinged at ,36 and normallyheld in closedV position by means of a spring 87 connected at one end toan arm 3 8 extending from the pivot of saiddoor, and at the. oppositeend to a stationary part of the frame.-

A slide 39 .is mounted in a way 41 which is provided in an.upstandingbracket 42, and this slide is constantly reciprocated by meansof a link 43, a bellfcrank lever-44 and The, bellcrank 44 is pivoted at46 to ears 47. upstaudingrfrom the table 27, and the rod is reciprocatedby certain,continuously operating mechanism to be hereinafter described.Upon the slide 39, there Ais piyotally secured a lever 48 anddependingfrom thislever,` at one end, is a rod 49` connected at itslower end vwith the trap door .At theopposite end of said lever 48, adetector rod, or pin, 51 is secured in a 4slot 52 and'extends through abearing` and an aperture 54. into the channel. 28. During the constantreciproca tion of the slide 39, said pin 51Y is permitted to enter thechannel 28, if nobody bein positionto obstructit, andthe door is held Inthe, event, however, that` the bodieshave backed up in the channelv 28so that one is present beneath the aperture( 54y upon the downwardstroke of the pin 51, the rod 49 is forced downwardly andthe trap door`35 opened to permit the discharge of bodies positionedthereon. Saiddoor, 35 is connected `by means of a linlxF 55 witha guard wing 56,which is pivoted at 57 to the frame and which obstructs the channel 28when the door is opened.

Extending from the slide 39 above the lever 48 is a pin 58, whichcarries at its outer end a lever 59v which serves to operate a detector.pin G1, corresponding to the pin 51, and is connected by a rod 62 witha` trap door (53v (Fig. 4) at the .bottom of theapassagei29, beingsecured thereto by a. screw (i4. This mechanism. operates in a. mannersimilar to that shown in Fig. 3 and further description is, therefore,believed to `be unnccesiriry.

rEhe bodies and-covers' are directedtnrough the channels 28 and 29,which are illustrated insection` in Eig. 5, until the. covers arrivebeneath anA opening 65, as shown.Y inV Fig. 1.

This opening, of course, permits escape of the. air which is employed asa feeding inedium andthe coyersstop-until moved further byinstrumentalities tobe later described. 'lf he bodyr channel is cutawa); aft-6GA opposite to the` opening 65,. so'thatv a. body. and acover are delivered to stationary positions in alignment .substantiallyon the line 6 6. in

A can body conveying.` arm 67 ismounted on: a squarecontrol shaft (38(Fig. 29). which is mounted in bearings. 69. and 71 (Fig. 1), said armbeinginovable lengthwise, of said shaft through the instrumentality ofa. slide 72 and an arm 73. Said slide 72 is reciprocated by` meansA ofan arm 74, connected therewith by means ofa link 79, and cai* ried on avshort shaftf75 havingibearings 7 6 onS the table 27, said shaft beingrotated by anarm 77 (Fig. 5) on a short shaft 7 Rcarryingrat its lowerenda roller adapted to ride inav grooye 79l of an operating cam 8l car-lrie-d on a main drive shaft 82, these parts being particularlyillustrated in Figs. 2 and 54 of the drawings.

A finger 83 is securcdto the conveyor arni 57V and is norn'ially.disposed in the channel 29 in the pathof the boxv covers, as illustratedin Figs. 5 and 6. The shaft G8 is givenintermittent rocking motion bymeans of an arm 84. a` link. 85 and a bell-crank lover 86. the, latterbeing mounted on an auxiliary shaft 87 and carrying a cani roller 88acted uponby Va cam 89 on the main drive shaft 82. The upper arm ofthebell-crank 86 is connected by means of a spring- S0 with a dependingflange 80 of the table 27. which tends to hold the conveyer arm G7 vinopera tive position.j Rotation of the shaft (SS in counter-clockwisedirection li tsk the linger 83 and, while in its lifted position. it ismoved rearwardly with the arm 67 and when again lowered, it engageswithin a cover which is moved forwardly upon the next movement of saidarm toward the right, viewing Fig. 1.

titl

After the cover has been advanced to the station shown in Fig. 12, it ismovedt-ransversely toward the body channel byV means of a slideindicated by the reference charac ter 91, said slidebeing reeiprocatedby a bellcrank lever 92 connected by a link 93 with a depending arm 94:secured. to said slide by means of a screw 95. A cam roller 90 iscarried in one arm of the bellecrank 02 and rides in a cam groove 07 inan operating cam 08 carried en the shaft I shallnow'describe themechanism where b v feedingof a body to the assembling station isprevented in the absence of a cover in position to be attached thereto.Upon moveH nient of the slide 91. toward the left, viewing Fig. 12, thecover is brought beneath a retaining plate 99 and'above a. detector pin101. Said detector pin normally engages the Slide 99 and is rounded atthe iop to permit of the depression thereof by a cover in pass` ingthereover and at its lowerend. rests upon an arm 102 carried upon ashaft 103 having bearings in brackets 101 depending from the table 27.The plate 09 is vcarried on an arm 105, which is mounted on a shaft 100,the latter being given a slight rocking motion by means of anV arm 107,a link 103 and a bell-crank lever 109 mounted on the shaft 87 andcarrying a: roller 111 riding 'in the groove of an operating cam 112upon the shaft 82, these parts being shown most clearin Fig. 6.' Y 1f acover ispositioned over the pin 101, the shaft 103 is rotated by the arm102 and a second arm 113 on said'shaft 1,03 is forced downwardly againstthe action of a spring 114 secured to said. arm and to the bottom of thetable 27. Said arm 113 is clearly shown in Fig. 5 in the positionassumed when a-Vcover is not present above the pin `101 and it will bemanifest that, with the arm 113 in its upper position, a pin on theknuckle 1.15, forming the connection between the arm 84: and the'link85, Vis cngaged by a hook 116 on the arm 113 when said knnck e is forcedinto the sphere of action of said. lever by the bellecrank 86. It willthus be impossible for the shaft `(i310 be further rotated and the boxbody conveyor arm 67 is held in its outer, or inoperative position if acover is present or in position over the pin 101, the shaft (i8 maybefreely rocked by means of the arm 311-, the arm 113 beingr held inposition out of the path of the pin y 115 against the action of thespring 114 by the pin 101 permitting normal operation of the body feed.

I also provide a device for preventing the feeding of the covers in theabsence of'a body at the assembling position, this device beingillustrated in detail in Fig. 3. As the bodies reach the open section ofthe channel 28, and approximately at the` point indicated by the line6-6 in Fig. 1, they are engaged by a rear finger *117 on the conveyor bythe casting 118 latch 1231is pivotally secured at 1211` inthis recess.,vSaid latch is normally forced out` wardly by ar pin 125,\which is underthe tension of a spring 126. The latch `123 is provided centrally with abeveled surface127, upon which a body 21 is adapted to actin its forwardmovement under the influence of the linger 117 on the arm 67. lf a bodybe present at this point, the latch is forced inwardly and the bodyadvanced tothe position indicated at 128 in Fig. 3. lhen the arm o? isagain moved to the .left upon the shaft `68, a forward finger 120 onsaid arm engages the body vat the station 128 and the rear finger 11i7engages a second cover which has been delivered by the air feed.V Theforward cover, at this time, is positioned in aV recess 131 in the latch123. Upon the next forward movement of the conveyer arm, the forwardbody is advanced to the right to the next operating` station. In theevent that a body 21 isV not present to act upon the beveled surface127` of the latch 123, the finger 117 on the arm 67 is forced ontwardlj,since the force of the spring 12S acting upon said latch is sinheient toovercome the weight ofsaid arm 67. 1n this manner, the body conveyingarm is moved to inoperative position, which results in lifting thefinger 83 by which the covers are advanced with con# sequent failure toadvance a cover to the assembling station. The forward body, meantime,vill remain in the recess 1.31 of the latch. From the foregoing,it willbe seen that neither a body nor a cover-can be advanced tovsaidassembling station in the absence of a Companion part to be `assembledtlierewith.V i Y l Assnining that a. box body and cover are positionedin adjacent relationship atthe assembling station, the next'joperationis the bending ofthe hinge lug 23 from the position illustrated in. Fig.17 of ltie drawing to that illust-rated in Fig. V13.v The mecha-` nismfor performing this operation is per haps bestillustrated in Figs. (i. 7and 12. A sliding block 132 is carried iipon the arm 105 and a forwardfinger is pivotallyl connected at 134 to said sliding block 132.`

The linger 133 is normally held in lifted position by means of aspring-pressed pin v135 projecting from the block 132 and bearingagainst a lower extension 136 at the rear 0f the linger 1.33. Saidslidingblock 132 is given a reciprocating movement imparted from theslide 91 through mechanism illustrated in detail in Fig. 7. Saidmechanism comprises a reciprocating arm 137, which is rotatably mountedin abraclret 138 and is provided with a lower projection 139 which isacted upon by theslide 91, and with an upper projection 141 which actsupon the sliding-bloeit132tomove the same in unison with the slide 91,said arm'141 being also adapted to move the slide 132 rearwardly bymeans of a hook 140 extending beyond said arm .at the rear oifvtheslide. Upon movement of theblock 132toward the left, viewing Fig. 12,lower projection 136 on the finger 133 acts upon a pin 142 provided inan upward projection 143.011 the retaining plater 95), forcing theforward end ot said finger downwardly and against the inner lug 23 onthe box body. The forward end o't said linger 133` ic grooved, asindicatedat 144, and vthus adapted to accurately engage the Vlug 23 andbend the sain-e to desired position, Upon the receding movement ot theblock 132, the finger 133 is lifted bythe action ot the pin-135. At thispoint,'it may be noted that the arm 105, carrying the slidingbloclr 132and the retaining plate 99, is providedwith a4 rear extension 145, whichis normally pressed upwardly by a spring 146, the upward movement beinglimited by a set screwf 147. In this manner, all lost motion isprevented andV the desired limited rocking motion is imparted to theshaft 10.6.

Y After the lug 23is bent downwardly over thercorresponding lug on thecover and the hinge thus partially formed, the box is advanced onesteptoward the right by the action of thev succeeding boxes thereon. The4next operationis the opening of the box, accomplished by turningthebody 21 to the horizontal position, shown in Fig. 18, this being doneby mechanism illustrated particularly in Fig. 9. n An arm 148'is pivotedat 149 to a vfixed member 151 on the vframe and is connected by a`curved link 152 4with a bell-crank 153 carried on the shaft 87 andoperated by a cam 154, on the main drive shaft 82. The arm 148 isprovidedrwitha hinged extension 155, which is adapted to engage. overthebox 21 when in the forward position and to move the, same downwardlyabout its hinge .as a pivotal axis to horizontal position. It will `benoted that the cover 24. at this point, is held beneath a ,retainingguide 156. and the body, after being brought to horizontal position andagain moved in forward direction, passes under a similar guide 157.

AThe action of the advancing boxes then brings the partially assembledbody and cover to the final clinching` station, which is illustrated inFigs. 10 and 11. A sliding toggle mechanism is employed for this purposeand consists oi' a piston 158 extending through a bearing 150 and havingat its front end a bifurcated portion'159 carrying a` pivoted member 16111), which has a lower extension162. provided with a lclosing finger163, andan upper extension 164 to which'is pivotally secured a secondclosing iinger 165. Said linger 165 isalso centrally pivotcd at 166 on aframe bracket 167 and is forced over center and caused to c0- operatewith the linger' 163 upon forward movement oi'. the piston 158. "his:results in the .tinal clinching` otl the lugs 23 and 22 into therelationship shown in'Fig.19, thus completing the hinge.

The piston 158 is reciprocated to open and close the Clint-hing jaws bymeans o't' a cam 168, which operates an arm 169 connected by links 171and 172 with said piston 158.

Alfter the assembly ot the bodies and covers is completed at thisstation, thefboxes are again moved toward the right in a channel 170 andejected from the machine.

The main drive shaft 82 isvdri-ven by means of tight and loosepulleys-173and 17 4, the belt being shi'ttedvfrointhe one pulley to theother by means of a. belt shifter 179. Said shaft 82 has bearingsinbrackets 175 and 176 depending from the table 27. rilhe shaft 87 is,similarly supported from said table 27 by means ot brackets 177 yand178.

It is thought that the invention and many of its attendant advantageswill be understood from the foregoing description, and it will beapparent that various changes may be made lin. the form, constructionvand arrangement ot the parts, without departing from the spiritand scopeofthe invention, or sacrificing all of its materialV advantages, theform hereinbetore described being merely a preferred embodimentthereof.

l claim:

V1. A machine tor automatically assembling hinged covers upon metal` boxbodies, comprising means` for .advancing the covers and bodies inseparated: relationship, means for arranging said parts inadjacentrelationship, and successively. operating devices including lhingedlyconnected ngers for bending and clinching together co-operating hingeforming lugson the covers and bodies.

2. A machine for automatically assembling hinged covers upon metal boxbodies, comprising means for advancing` the covers 'and bodies insej'iaratcd relationship and disposed respectively in horizontal andvertical planes, means for.. arranging said parts in adjacentrelationship, and successively operating devices t'or bending andclinching together co-operating hinge forming lugs on the covers andbodies.

l3. A machine tor automatically assembling hinged covers uponmetal boxbodies, comprising means tor delivering` covers and bodies to argivenstation in alignment and in separated relationship, means or bringingsaid covers `and bodies into juxtaposition with the pintle element otthe cover within the flange of the body and the flange of the coverexterior to the body, and devices for cllnching co-operating hinge lugson the covers and bodies into hinge forming rela-Y tionship.

l. A machine for automatically assembling hinged covers upon metal boxbodies, comprising means fordelivering covers and bodies to stationaryspaced positions, means -for engaging said parts in said positions 5. Amachine for automatically assembling hinged covers upon metal boxbodies,

comprising means for delivering bodies and covers to given stationarypositions in aligniment and in separated relationship, means forengagingsaid bodies and covers and advancing them to an assembling station,means for moving them into juxtaposition, means for clinching togetherhinge forming parts in the bodies and covers, and means for preventingadvance of a body to the assembling station in the absence of a cover inposition to be assembled therewith.

6. A machine for automatically assembling hinged covers upon metal boxbodies, comprising means for delivering bodies and covers to givenstationary positions in alignment and in separated relationship, meansfor engaging said bodies and covers and advancing them intojuxtaposition, means for clinching together hinge forming parts in thebodies and covers, -and means for preventing advance of a cover to theassembling station in the absence of a body in position to be assembledtherewith.

7. A machine for automatically assembling hinged covers upon metal boxbodies, comprising separated channels through which the bodies andcovers are fed to an assembling station, means for forming hinge partsof the bodies and covers together into a completed hinge, and safetydevices for automatically discharging a portion of the bodies from thebody channel in the event of overcrowding therein. y

8. A machine for automatically assembling hinged covers upon metal box`bodies, comprising separate channels through which the bodies and coversare fed to an assembling station, means for forming hinge parts of thebodies and covers together into a completed hinge, and safety devicesfor automatically discharging a portion of the covers from the coverchannel in the event of overcrowding therein.

9. A machine for assembling hinged cover metal boxes, comprising meansfor advancing bodies and covers in angularly disposed and separatedrelationship to a given station, a conveyer arm engaging the bodies at`Y said sta'ion and further advancing the same, means associated withsaid conveyer arm for further advancing the covers in alignment with thebodies, means preventing-operation of said cover advancing means in theabsence of a body to be moved bysaid conveyer arm, means for arrangingbodies and covers in juxtaposition when they are advanced together, andmeans for forming hinges` between the juxtaposed lianges of the bodiesand covers.

1G. A machine foi` assembling hinged cover metal boxes, comprising meansfor advancing bodies and covers in angularly disposed and separatedrelationship toa givenV station, a conveyer arm engaging'v the bodies atsaid station and further advancing'the same, means associated with saidconveyer arm for further advancing the covers in alignment wi'h thebodies, means for preventing effective operation of said body conveyerarm in the absence of a companion cover for the body being advanced,means for arranging bodies and covers in juxtaposition when they areadvanced together, and means for forming hinges between the juxtaposedflanges of the bodies and covers.

11. A machine for assembling hinged cover metal boxes, comprising meansfor advancing bodies and covers in separated relationship, saidadvancing means having devices for holding the body and cover at anangle to each other, means for arranging companion bodies and coverswith hinge forming lugs in the flanges thereof in overlyingrelationship, means for bending one of said lugs over the other, meansfor thereafter fully opening the partially assembled box, and means forfinally clinching said body and cover hinge forming lugs into acompleted hinge.

12. A machine for assembling hinged cover metal boxes, feeding thebodies and covers 'through angularly arranged channel Ways, meansengaging the bodies and covers delivered from said ways and advancingthem in alignment, means for moving' the covers into position adjacentthe bodies, and means associated with said last-mentioned cover movingmeans for bending hinge forming lugs in the bodies over (zo-operatinglugs in the covers to partially form a cover hinge.

13. A machine for assembling hinged cover metal boxes, comprising meansfor feeding the bodies and covers through angularly arranged channelways, means engaging the bodies and covers delivered from said ways andadvancing them in alignment, means for moving the covers into positionadjacent the bodies, means associated with said last-mentioned covermoving means for bending hinge forming lugs in the bodies overco-operating lugs in the covcomprising means for ers to partially formVa cover hinge, means for opening the partially assembled box, and meansfor clinching said lugs into a completed. hinge.

14. A machine for assembling hinged cover metal boxes, comprising meansfor advancing flanged bodies and covers to an assembling station, meansfor arranging the bodies and covers in juxtaposition, and means forinterengagingV anged portions on the body and cover to form an integralhinge therein with the pintle element of the coverV Within the liange ofthe body and the flange of the cover exterior to the body.

15. A machine for assembling hinged cover metal; boxes, comprising meansfor advancing flanged bodies and covers to an assembling. station, meansfor arranging the bodies and covers in juxtaposition, and means forforming, a hinge by interengagement of co-operating fianged portions ofthe body and cover with the pintle element of the cover Within theflange of the body and the flange of the cover exterior to the body.

16. A machine for assembling., hinged cover metal boxes, comprisingmeans for advancing bodies and covers; in separated relationship, meansfor arranging them in adjacent positions, means for causinginterengagement of co-operating hinge forming lugs on the bodies andcovers, and mea-ns for clinching said lugs to complete the hinge, saidmeans comprising an automatically operable sliding toggle and clinchingfingers operated thereby.

17. A machine for assembling hinged cover metal boxes, comprising coverand body advancing means, and means antomalically arranging said partsin assembled and hinged relationship with the pintle element of thecover Within the flange of the body and t-he fiange of the coverexterior to the. body.

JOHN M. HOTHERSALL.

